Cool. FYI you may want to hit the 'reply' button under comments in the future if you are replying to a specific comment in your auctions, that will notify the Listia member (do we have some kind of moniker like 'Lister' yet?) that you replied to their comment.
Would you allow the buyer to opt for a cheaper shipping option?
I can kind of see where you'd want the tracking and insurance on items you're shipping out, it's just that pretty low odds of something getting lost in the mail.